Platform MPI

Updated on 2022-05-09 GMT+08:00

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Scenarios

This section describes how to install and use Platform MPI (for example, platform_mpi-09.01.04.03r-ce) on an ECS.

Prerequisites

You have configured the ECS password-free login.

Procedure

Install Platform MPI.
1. Run the following command to install the required library file:
  # yum install glibc.i686 libgcc-4.8.5-11.el7.i686
2. Add the execution permission. For example, the installation package is stored in /root.
  # cd /root && chmod +x platform_mpi- 09.01.04.03r-ce.bin
3. Run the following command to install Platform MPI:
  # ./platform_mpi- 09.01.04.03r-ce.bin
  
  Press Enter or 1 (accept the agreement) as prompted until the installation is complete.
  
  Figure 1 Successful Platform MPI installation
  
  The default installation path is /opt/ibm/platform_mpi.
Configure MPI environment variables.
1. Run the following command to obtain the pkey:
  # cat /sys/class/infiniband/mlx5_0/ports/1/pkeys/* | grep -v 0000
  
  Figure 2 Obtaining the pkey
2. Add the following statements in ~/.bashrc as a common user:
  export MPI_ROOT=/opt/ibm/platform_mpi
  
  export PATH=$MPI_ROOT/bin:$PATH
  
  export LD_LIBRARY_PATH=/opt/ibm/platform_mpi/lib/linux_amd64
  
  export MPI_IB_PKEY=pkey obtained in 2.a
  
  $source ~/.bashrc
  NOTE:
  
  If there are multiple pkeys, use a comma to separate them.
3. Run the following command to check whether the environment variables have been imported:
  # which mpirun
  
  Figure 3 Successfully importing environment variables of Platform MPI
Run Platform MPI on an ECS:
1. Run the following command to re-compile the hello.c file:
  # mpicc hello.c -o platform_hello
2. Run the following command to run Platform MPI on an ECS:
  # mpirun -np 2 /root/platform_hello
  
  Figure 4 Running Platform MPI on an ECS

Parent topic: Installing and Using MPIs

Previous topic: Intel MPI

Next topic: Creating a Private Image Using an ECS

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